/**
 * Given a 2D binary matrix filled with 0's and 1's, find the largest rectangle containing only 1's and 
 * return its area.For example, given the following matrix:
 * 1 0 1 0 0
 * 1 0 1 1 1
 * 1 1 1 1 1
 * 1 0 0 1 0
 * 
 * Return 6.
 */
/**
 * @author Ivan
 *
 */
package problem85_Maximal_Rectangle;